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Amp Internals 2

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mini-mad View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mini-mad Quote  Post ReplyReply Direct Link To This Post Topic: Amp Internals 2
    Posted: 06 February 2019 at 7:03pm
You COULD of had a pair of clone 405 amps in there for a minimum of DOUBLE the output...


If it sounds like a gorilla is trying to escape, turn it down.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jbl_man Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2019 at 7:22pm
Originally posted by michel29 michel29 wrote:

the worst of worst
Ibiza Amp300
it works
bench test : 2x 45w RMS /8 ohm
2 channels driven
sold as 2x 160w / 8ohm





I'm suprised they even bothered with descrete components in this,a chip-amp would have produced 2x45w no problem.
Be seeing you.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stanley dj Quote  Post ReplyReply Direct Link To This Post Posted: 28 January 2019 at 10:52am
it is bittner is making amps for more brands 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 4AC Quote  Post ReplyReply Direct Link To This Post Posted: 28 January 2019 at 10:27am
I think this Bose Entero is a rebadged version of the Bittner 4X DUAL Series, maybe slightly modified:




I had two Entero 4400's once, both with failures. My repair guy said that they were beyond economical repair. Not that this says anything about the reliability of these amps...


Edited by 4AC - 28 January 2019 at 10:28am
uǝɿɿɐʌǝ6ɯo sı ʇsʞǝʇ ǝzǝp
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tonskulus Quote  Post ReplyReply Direct Link To This Post Posted: 28 January 2019 at 6:07am
Bose entero 4400

4 x 400W/8ohm 
2 x 900W/8ohm (I measured 2 x 903Watts rms @ 40Hz).  I don't recommend 4ohm bridge load, this amp is happy with 4 x 4ohm or 2 x 8ohm.
Very sweet sounding and flawless amp. Almost silent at idle, no fan noise at all and they are responding really fast for increasing or decreasing loads. This amp really does what they claim in product manual.



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Post Options Post Options   Thanks (0) Thanks(0)   Quote user91 Quote  Post ReplyReply Direct Link To This Post Posted: 23 January 2019 at 8:33pm
Irni L FPX 3000 /  Made in Bulgaria
2 х 2100W / 2 ohms, 2 х 1500W / 4 ohms, 2 х 900W / 8 ohms



Uniqaudio PA 1800 / Made in Bulgaria
2 х 900W / 2 ohms, 2 х 800W / 4 ohms, 2 х 450W / 8 ohms






Edited by user91 - 23 January 2019 at 9:30pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jakeeboy64 Quote  Post ReplyReply Direct Link To This Post Posted: 13 November 2018 at 11:37pm
Don't suppose anyone has a circuit diagram for the PSL 2401? I have 2 of them and 3 out of 4 channels have a little too much DC offset. Thanks



Edited by Jakeeboy64 - 13 November 2018 at 11:43pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote michel29 Quote  Post ReplyReply Direct Link To This Post Posted: 18 September 2018 at 10:05pm
Originally posted by odc04r odc04r wrote:

Ah well, you can always re-use the transformer and build something better in the enclosure when they die. Looks oversized for the output.

transformer ?
i prefer re-use transformers from mini-HiFi components
better construction
better primary/secondary insulation

not toroïd > better mains'noise attenuation

i've fixed a Cambrige amplifier with a transformer from a Philips Mini HiFi system
on Cambride , the worst toroïd , made in china by childrens ?
il was dead , short-circuit in primary

on Philis a good Tam-radio E-I transformer  fitted with good magnetic shield



Edited by michel29 - 18 September 2018 at 10:14pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 05 September 2018 at 1:59pm

QSC CX 1202V 70 Volt Amplifier

 

700 watts per channel @ 8 ohms

1100 watts per channel @ 4 ohms

1000 watts per channel @ 70 volts

 

Picked it up on Ebay for £ 195.00 Clap

 

Plan to use it to drive some old JBL 2404 Tweeters

 

 

Best Regards,

Elliot Thompson
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Post Options Post Options   Thanks (0) Thanks(0)   Quote odc04r Quote  Post ReplyReply Direct Link To This Post Posted: 05 September 2018 at 9:14am
Ah well, you can always re-use the transformer and build something better in the enclosure when they die. Looks oversized for the output.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tonskulus Quote  Post ReplyReply Direct Link To This Post Posted: 05 September 2018 at 6:27am
Originally posted by michel29 michel29 wrote:

the worst of worst
Ibiza Amp300
it works
bench test : 2x 45w RMS /8 ohm
2 channels driven
sold as 2x 160w / 8ohm




Those are horrible amps, same shit as Skytec etc.  At least some of them are self-destructing type (thermal runaway) and no protections at all = when output stage fails, speakers are gone.
And those claimed power ratings are just a big joke :D 

These amps are toys really, NOT for serious use. "babby's first PA kit", as some of these are sold as amp + speaker + dj mixer kits (those speakers are same chinese shit too, weak woofer and piezo tweeters).  





Edited by Tonskulus - 05 September 2018 at 6:28am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote M4trix Quote  Post ReplyReply Direct Link To This Post Posted: 05 September 2018 at 3:15am
Damn, that chassis could be used for better stuff. Ouch
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